Maximum ecological efficient power performance of endoreversible Ericsson cycle
Using the finite-time thermodynamics analysis method,based on the endoreversible Ericsson cycle model established in existing literature,the ecological efficient power is taken as the objective function to study the performance characteristics of the cycle.Through numerical calculations,the impact of the parameter K/lnrp(K is a variable related to the reheat time coefficient,rp is the pressure ratio)and the heat transfer coefficient on the relationship between ecological efficient power and efficiency,temperature ratio,and power characteristics is analyzed.The performance differences of the cycle under the conditions of maximum ecological efficient power,maximum power,maximum effective power,and maximum ecological function are compared.The results show that the ecological efficient power is parabolic with temperature ratio and efficiency,and loop-shaped with power.The maximum ecological efficient power of the cycle and its corresponding optimal temperature ratio and power decrease with the increase of K/lnrp or the reduction of the heat transfer coefficient.When optimizing for ecological efficient power,some output power is sacrificed,which improves efficiency and reduces the rate of entropy production,providing a new scheme for the performance optimization design of actual heat engines.
endoreversible Ericsson cycleecological efficient poweroptimal performanceperformance comparisonfinite-time thermodynamics
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